Jon Stewart begins by praising her singing voice in the film, a talent that he never realised she possessed, Knightley responds by saying “I was just quite disappointed that I didn’t sound like Adele.”

Keira Knightley aims to impress Jon Stewart with her singing

“I wasn’t given the songs until 2 days before I had to go into the studio and I’m not a signer, I really don’t know how to do this," she tells Jon.

"We just got in there and said...this has to work.”

Stewart points out that they took a huge gamble as she could’ve been terrible (complete with bad singing demonstration).

Watch the clip above and see what you think of Keira's singing voice.. does Adele need to worry?